The zone above the water line at a shore of a body of water, marked by an accumulation of sand, stone, or gravel that has been deposited by the tide or waves. The shore of a body of water, especially when sandy or pebbly. The sand or pebbles on a shore. To run, haul, or bring ashore: beached the rowboat in front of the cabin; hooked a big bluefish but was unable to beach it. To leave stranded or helpless.